A sterile blood feeding device for locusts

Abstract

The utility model relates to the technical field of aquaculture equipment, and specifically relates to a sterile blood feeding device for locust, comprising a protective cover, a microporous filter membrane and a floating body, the protective cover is open at the top, the inside is a blood placement area, an inlet and an outlet are arranged at intervals in the side wall, the inlet and the outlet can be used for the entry and exit of locusts and automatic closing respectively, the microporous filter membrane is arranged at the opening of the protective cover to allow the blood smell to diffuse and attract locusts, and meanwhile block the impurities and microorganisms in the water from entering the protective cover, the floating body is connected to the top of the protective cover and can float on the water surface, so that the protective cover is suspended in the water, the utility model can effectively solve the blood pollution problem of the existing open feeding device.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture equipment technology, specifically to a leech sterile blood feeding device. Background Technology

[0002] In the large-scale breeding of medicinal leeches, feeding them fresh animal blood (such as cow's blood or pig's blood) to promote their feeding is a crucial technical step. In existing technologies, such as patent document CN201920701309.1, a feeding device for Japanese medicinal leeches is disclosed. This device uses a boat-shaped structure to hold casings wrapped with animal blood. The boat-shaped structure is suspended in the water by floats, suspension ropes, and support ropes, preventing it from sinking into the bottom silt. While this method helps the blood's odor spread rapidly in the water, the feeding area is completely exposed in the breeding pond, which has the following drawbacks:

[0003] The open-top boat-shaped structure lacks effective pollution control measures, allowing large particles such as silt and algae, as well as microorganisms like bacteria and algal spores, to directly enter the blood zone with the water flow. Once inside the blood zone, microorganisms can osmotically penetrate the casing and contaminate the blood. Large particles easily adhere to the casing surface, not only scratching and damaging it but also accelerating the colonization and reproduction of microorganisms (forming a biofilm), further contaminating the internal blood. Leeches that feed on this contaminated blood will become infected, impacting the profitability of the aquaculture.

[0004] Therefore, there is an urgent need to design a new type of feeding device to solve the problem of blood contamination caused by the existing open-hull structure. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a leech sterile blood feeding device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sterile blood feeding device for leeches includes a protective cover, a microporous filter membrane, and a float. The protective cover has an opening at the top and a blood placement area inside. The side walls are provided with an inlet and an outlet, which allow leeches to enter and exit and close automatically. The microporous filter membrane is disposed at the opening of the protective cover to allow the blood odor to diffuse and attract leeches, while blocking impurities and microorganisms in the water from entering the protective cover. The float is connected to the top of the protective cover and can float on the water surface, so that the protective cover is suspended in the water.

[0008] As a further improvement of this utility model, the protective cover is cylindrical in shape and is made of polycarbonate.

[0009] As a further embodiment of this utility model: wherein, the inner side of the inlet and the outer side of the outlet are respectively provided with elastic contraction structures; the elastic contraction structure includes: an elastic guide port and a tension ring; one end of the elastic guide port is connected to the inner or outer wall of the protective cover; the tension ring is sleeved on the other end of the elastic guide port.

[0010] As a further improvement of this utility model, the elastic guide opening is trumpet-shaped, with its large end connected to the inner or outer wall of the protective cover.

[0011] As a further embodiment of this utility model: wherein the pore size of the microporous filter membrane is ≤0.1μm, and the outer periphery is sealed to the opening edge of the protective cover.

[0012] As a further embodiment of this invention: the floating body is circular in shape and made of foam material.

[0013] As a further improvement of this utility model, each of the four sides of the top of the protective cover is provided with a lifting lug, and the lifting lug is connected to the floating body by a connecting rope.

[0014] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0015] This invention effectively solves the blood contamination problem of existing open-type feeding devices through the synergistic design of a protective cover, a microporous filter membrane, and a floating body. The protective cover's inlet and outlet can automatically close, preventing water from continuously entering the blood zone after leeches have entered or exited, thus reducing the intrusion of impurities and microorganisms. The microporous filter membrane, located at the opening of the protective cover, allows the blood's odor to diffuse and attract leeches while blocking impurities such as silt, algae, and microorganisms from entering, preventing them from contaminating the blood or damaging the blood intestines. The floating body connects to the protective cover, suspending it in the water and preventing the device from sinking into silt, further reducing the risk of blood contact with impurities. These three components work together to create a closed loop of "odor attraction - safe feeding - contamination control," ensuring the health of the leeches and improving farming efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the leech sterile blood feeding device described in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Front view of the leech sterile blood feeding device described in the embodiment;

[0019] Figure 3 for Figure 1 An exploded view of the leech sterile blood feeding device described in the embodiment, in a floating, concealed state.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] 1. Protective cover; 11. Inlet; 12. Outlet; 13. Lifting lug; 2. Microporous filter membrane; 3. Floating body; 4. Elastic contraction structure; 41. Elastic guide port; 42. Elastic ring; 5. Connecting rope; 6. Blood sausage. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figure 1-3 In one embodiment of the leech sterile blood feeding device provided by this utility model, the leech sterile blood feeding device includes a protective cover 1, a microporous filter membrane 2, a floating body 3, and an elastic contraction structure 4:

[0024] The protective cover 1 is a cylindrical protective cover 1 (50cm in diameter and 15cm in height), made of polycarbonate. The inside is a blood placement area for placing blood sausage 6 wrapped with blood. The entire top wall of the protective cover 1 is an opening, and the side walls are symmetrically provided with an inlet 11 (right side) and an outlet 12 (left side). The distance between the inlet 11 and the outlet 12 is the diameter of the protective cover 1. Both are circular holes with a diameter of 7cm, which are used for leeches to enter and exit the protective cover 1.

[0025] The microporous filter membrane 2 is made of polyethersulfone (PES) with a pore size of 0.05 μm (ideally no larger than 0.1 μm). The size of the microporous filter membrane 2 matches the top opening of the protective cover 1 (50 cm in diameter). The outer periphery of the microporous filter membrane 2 is tightly bonded to the edge of the opening of the protective cover 1 with food-grade silicone sealant to form a gapless seal. The microporous filter membrane 2 only allows blood odor molecules (such as amino acids and proteins) to pass through, while blocking impurities (mud, algal spores) ≥0.05 μm and microorganisms (bacteria typically have a diameter of 0.2–0.45 μm) from entering the blood zone.

[0026] The floating body 3 is positioned above the protective cover 1 and is circular in shape (outer diameter 30cm, inner diameter 20cm, thickness 5cm). It is made of closed-cell polyethylene foam (density 0.03g / cm³, waterproof and aging-resistant) and can float on the water surface. The protective cover 1 is evenly distributed and fixed with four lifting lugs 13 (plastic material, diameter 1cm) at the top circumference. Each lifting lug 13 is fixed to the floating body 3 by a nylon connecting rope 5 with a diameter of 2mm, so that the protective cover 1 is suspended in the water (avoiding complete exposure or sinking in the silt).

[0027] Two elastic contraction structures 4 are provided, corresponding to the inlet 11 and the outlet 12 respectively. The elastic contraction structure 4 of the inlet 11 is located inside the inlet 11 (on one side inside the protective cover 1), including an elastic guide 41 and a tension ring 42. The elastic guide 41 is funnel-shaped and made of food-grade silicone. The large end is bonded to the inner wall of the protective cover 1 and connects to the inlet 11, and the small end is fitted with the tension ring 42 (an elastic rubber ring with an inner diameter of 1cm in its natural state and a maximum expansion to 3cm). The elastic contraction structure 4 of the outlet 12 is located outside the outlet 12 (on one side outside the protective cover 1), and its structure is the same as that of the inlet 11. The large end of the funnel-shaped elastic guide 41 is bonded to the outer wall of the protective cover 1, and the small end is fitted with the tension ring 42 (with the same parameters as the inlet 11). When a leech (approximately 1-2 cm in diameter) attempts to enter, the elastic guide 41 of the inlet 11 is squeezed, causing the elastic ring 42 to expand to 3 cm, allowing the leech to pass through. After entering, the elastic ring 42 contracts and returns to its original position (inner diameter 1 cm), closing the small end of the elastic guide 41 and preventing water from continuously entering. After feeding, the leech moves towards the outlet 12, squeezing the elastic guide 41 of the outlet 12, causing it to expand and then exit. The elastic ring 42 then contracts and closes again.

[0028] The method of use or working principle of this utility model is as follows:

[0029] First, remove the elastic ring 42 from outlet 12 and open the elastic guide port 41. Place the casing (blood sausage 6) containing fresh cow blood into the protective cover 1 (blood placement area) through outlet 12. Then, connect the float 3 to the lifting lug 13 of the protective cover 1 via the connecting rope 5 and place it into the breeding pond. The float 3 floats on the water surface, causing the protective cover 1 to suspend in the water. The smell of blood diffuses into the water through the microporous filter membrane 2, attracting leeches to gather. Guided by the elastic guide port 41 of inlet 11, the leeches squeeze the elastic ring 42 of inlet 11 and enter the protective cover 1 along the elastic guide port 41. After the leech feeds on the blood sausage 6, it squeezes the elastic guide 41 of the outlet 12 under the guidance of the elastic guide 41 and exits the protective cover 1 along the elastic guide 41. After the leech enters and exits the protective cover 1, the elastic guide 42 of the inlet 11 and the outlet 12 retract and reset, closing the small end of the elastic guide 41, blocking water impurities and microorganisms from entering, and working with the microporous filter membrane 2 to intercept impurities and microorganisms ≥0.05μm, reducing the pollution rate of the blood area.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leech sterile blood feeding device, characterized in that, include: The protective cover (1) has an opening at the top and a blood placement area inside. The side walls are provided with an inlet (11) and an outlet (12) at intervals. The inlet (11) and outlet (12) can be used for leeches to enter and exit and can be automatically closed. A microporous filter membrane (2) is placed at the opening of the protective cover (1) to allow the blood odor to diffuse and attract leeches, while blocking impurities and microorganisms in the water from entering the protective cover (1). The floating body (3) is connected above the protective cover (1) and can float on the water surface, so that the protective cover (1) is suspended in the water.

2. The leech sterile blood feeding device according to claim 1, characterized in that, The protective cover (1) is cylindrical and is made of polycarbonate.

3. The leech sterile blood feeding device according to claim 1, characterized in that, The inner side of the inlet (11) and the outer side of the outlet (12) are respectively provided with elastic contraction structures (4); the elastic contraction structure (4) includes an elastic guide port (41) and a tension ring (42). One end of the elastic guide port (41) is connected to the inner or outer wall of the protective cover (1); the tension ring (42) is sleeved on the other end of the elastic guide port (41).

4. The leech sterile blood feeding device according to claim 3, characterized in that, The elastic guide port (41) is horn-shaped, and its large end is connected to the inner or outer wall of the protective cover (1).

5. The leech sterile blood feeding device according to claim 1, characterized in that, The microporous filter membrane (2) has a pore size of 0.05 μm and its outer periphery is sealed to the opening edge of the protective cover (1).

6. The leech sterile blood feeding device according to claim 1, characterized in that, The floating body (3) is circular and made of foam material.

7. The leech sterile blood feeding device according to claim 6, characterized in that, The protective cover (1) has a lifting lug (13) on each of its four sides at the top, and the lifting lug (13) is connected to the floating body (3) by a connecting rope (5).

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